Keith Lemon's Very Brilliant World Tour is a travel-style comedy series hosted by Keith Lemon, a character portrayed by comedian Leigh Francis. The series was first announced during an appearance by Lemon on the Big Brother companion show Big Brother's Big Mouth in 2007. The series featured Lemon travelling around the world on a shark-shaped flight plan, visiting six different countries, and meeting various celebrity guests, including Spice Girls Mel B and Mel C, along the way.During the series, Paddy McGuinness played the role of Lemon's cousin Gary. The show premiered on 11 March 2008, attracting 565,000 viewers, and concluded on 15 April 2008.

In May 2008, Francis announced that he would not be filming a second series in the near future, as he would be busy filming his panel show Celebrity Juice commencing in August 2008. The show was released on DVD on 3 November 2008. Francis announced in May 2011 that he would like to write and record a second series, but said he would struggle to find the time to do so.